From 25612a0d936eaa217dfe700d101f0c81ef87965e Mon Sep 17 00:00:00 2001
From: Jb Evain <jbevain@gmail.com>
Date: Tue, 29 Sep 2015 17:21:27 +0200
Subject: Prevent exception on invalid blob index

---
 Mono.Cecil.Metadata/BlobHeap.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Mono.Cecil.Metadata/BlobHeap.cs b/Mono.Cecil.Metadata/BlobHeap.cs
index 527d042..6a07fc6 100644
--- a/Mono.Cecil.Metadata/BlobHeap.cs
+++ b/Mono.Cecil.Metadata/BlobHeap.cs
@@ -31,6 +31,9 @@ namespace Mono.Cecil.Metadata {
 			int position = (int) (index + Offset);
 			int length = (int) data.ReadCompressedUInt32 (ref position);
 
+			if (length > data.Length - position)
+				return Empty<byte>.Array;
+
 			var buffer = new byte [length];
 
 			Buffer.BlockCopy (data, position, buffer, 0, length);
-- 
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